There is still zero activity on iGPU for H264 footage scrubbing the timeline.
This problem is there is 25.1 release and Adobe have done nothing about it despite multiple users demonstrating there is a definite problem
https://community.adobe.com/t5/premiere-pro-discussions/premiere-pro-25-1-igpu-stopped-decoding-my-f...
Your current explanation @mayjain is that you have done this to move load to NVidia for H264.
Then why does H265 still rely 'automatically decide' on iGPU Quicksync for H265 decoding which works fine. There is no logic in this approach????
Please fix this H264 iGPU decode bug and re-instate the code that worked in Premiere 25.0.
Introduce some potential fixes in Beta versions so we can test them.
I have stayed on Win 11 23H2 to avoid other complexities apparent with Win 11 24H2 and intel drivers.
I am on xxx6449 Intel driver which works perfectly well with 25.0 version.